Wireless charging system

Abstract

A wireless charging system of a vehicle includes: a transmitting coil module including a plurality of transmitting coils; and a receiving coil module including a plurality of receiving coils receiving power by electronic resonance with the plurality of transmitting coils. The plurality of transmitting coils have a winding structure which is formed by a conductive wire causing a direction of a magnetic field generated by any one of the plurality of transmitting coils different from a direction of a magnetic field generated by a transmitting coil directly adjacent to the one transmitting coil by making a current flow in the plurality of transmitting coils.

What is claimed is: 
     
       1. A transmitting coil module used in a wireless charging system of a vehicle for transmitting power to a receiving coil module including a plurality of receiving coils by electronic resonance, the transmitting coil module comprising:
 a plurality of transmitting coils, wherein 
 the plurality of transmitting coils have a winding structure which is formed by a conductive wire causing a direction of a magnetic field generated by any one of the plurality of transmitting coils different from a direction of a magnetic field generated by a transmitting coil directly adjacent to the one transmitting coil by making a current flow in the plurality of transmitting coils, 
 the plurality of transmitting coils include a plurality of cores which are disposed on the transmitting coil module to be symmetrical to each other in a horizontal direction, a vertical direction, or a diagonal direction, 
 the conductive wire is wound around the plurality of cores, and 
 one end of the conductive wire is connected to and extends from a power supply unit, is wound in a first direction around a core included in a first coil of the plurality of transmitting coils, and is wound around a core included in a second coil of the plurality of transmitting coils, the second coil being symmetrical in a horizontal or vertical direction to the first coil and positioned directly adjacent thereto in a second direction. 
 
     
     
       2. The transmitting coil module of  claim 1 , wherein:
 the transmitting coil module includes four unit transmitting coils that are each configured of a core and a portion of the conductive wire that is wound around the core. 
 
     
     
       3. The transmitting coil module of  claim 1 , wherein the conductive wire is wound in the first direction around cores which are included in a third coil of the plurality of transmitting coils and is wound in the second direction around cores which are included in a fourth coil of the plurality of transmitting coils, the third coil being symmetrical in a diagonal direction to the first coil, and the fourth coil being symmetrical in a diagonal direction to the second coil. 
     
     
       4. The transmitting coil module of  claim 3 , wherein the other end of the conductive wire is wound around a core included in the fourth coil and is connected to the power supply unit. 
     
     
       5. The transmitting coil module of  claim 1 , wherein the conductive wire extends from a power supply unit and is formed in a shape similar to a number eight in which cores included in the plurality of transmitting coils are wound and are disposed in front and rear directions of the vehicle.